/*============================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.

Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.

============================================================================*/

#include "QmitkStandardViews.h"

#include "mitkBaseRenderer.h"

#include <QHBoxLayout>
#include <QPixmap>
#include <QVBoxLayout>
#include <qclickablelabel.h>

QmitkStandardViews::QmitkStandardViews(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f)
{
  QVBoxLayout *vlayout = new QVBoxLayout(this);
  QWidget *labelContainer = new QWidget(this);
  vlayout->addStretch(1);
  vlayout->addWidget(labelContainer);
  vlayout->addStretch(1);

  QHBoxLayout *hlayout = new QHBoxLayout(labelContainer);

  // find embedded picture
  QPixmap pixmap(":QmitkStandardViews.png");

  // set picture for label
  m_ClickablePicture = new QClickableLabel(labelContainer);

  // set hotspots specific for this image
  m_ClickablePicture->setPixmap(pixmap);

  m_ClickablePicture->AddHotspot("Left", QRect(QPoint(0, 64), QPoint(21, 83)));

  m_ClickablePicture->AddHotspot("Right", QRect(QPoint(128, 64), QPoint(149, 83)));

  m_ClickablePicture->AddHotspot("Top", QRect(QPoint(66, 0), QPoint(83, 75)));

  m_ClickablePicture->AddHotspot("Bottom", QRect(QPoint(66, 128), QPoint(83, 149)));

  m_ClickablePicture->AddHotspot("Front", QRect(QPoint(10, 102), QPoint(29, 119)));

  m_ClickablePicture->AddHotspot("Back", QRect(QPoint(119, 30), QPoint(138, 48)));

  connect(m_ClickablePicture, SIGNAL(mouseReleased(const QString &)), this, SLOT(hotspotClicked(const QString &)));

  hlayout->addStretch(1);
  hlayout->addWidget(m_ClickablePicture);
  hlayout->addStretch(1);
}

QmitkStandardViews::~QmitkStandardViews()
{
}

void QmitkStandardViews::SetCameraController(mitk::CameraController *controller)
{
  m_CameraController = controller;
}

void QmitkStandardViews::SetCameraControllerFromRenderWindow(vtkRenderWindow *window)
{
  if (window != nullptr)
  {
    if (mitk::BaseRenderer::GetInstance(window) != nullptr)
      if (mitk::BaseRenderer::GetInstance(window)->GetCameraController() != nullptr)
        m_CameraController = mitk::BaseRenderer::GetInstance(window)->GetCameraController();
  }
  else
  {
    std::cerr << "Warning in " << __FILE__ << ", " << __LINE__ << ": render window is nullptr!" << std::endl;
  }
}

void QmitkStandardViews::hotspotClicked(const QString &s)
{
  mitk::CameraController::StandardView view;
  bool good(true);

  if (s == "Left")
    view = mitk::CameraController::DEXTER;
  else if (s == "Right")
    view = mitk::CameraController::SINISTER;
  else if (s == "Top")
    view = mitk::CameraController::CRANIAL;
  else if (s == "Bottom")
    view = mitk::CameraController::CAUDAL;
  else if (s == "Front")
    view = mitk::CameraController::ANTERIOR;
  else if (s == "Back")
    view = mitk::CameraController::POSTERIOR;
  else
  {
    std::cerr << "Warning in " << __FILE__ << ", " << __LINE__ << ": unknown standard view '" << s.toStdString() << "'"
              << std::endl;
    view = mitk::CameraController::ANTERIOR;
    good = false;
  }

  if (good)
  {
    if (m_CameraController.IsNotNull())
    {
      m_CameraController->SetStandardView(view);
    }

    emit StandardViewDefined(view);
  }
}
